<template>
  <div class="list" ref="wrapper">
    <div>
    <div class="area">
      <div class="title border-topbottom">当前城市</div>
      <div class="button-list">
        <div class="button-wrapper">
          <div class="button">{{this.city}}</div>
        </div>
      </div>
    </div>
     <div class="area">
      <div class="title border-topbottom">热门城市</div>
      <div class="button-list">
        <div 
        class="button-wrapper" 
        v-for="item of hot" 
        :key="item.id"
        >
          <div 
          class="button" 
          @click="handleClickCity(item.name)"
          >
          {{item.name}}
          </div>
        </div>
      </div>
    </div>
    <div 
    class="area" 
    v-for="(item, key) in cities" 
    :key="key"
    :ref="key"
    >
      <div class="title border-topbottom">{{key}}</div>
      <div class="item-list">
        <div 
        class="item border-bottom" 
        v-for="innerItem of item" 
        :key="innerItem.id"
        @click="handleClickCity(innerItem.name)"
        >
        {{innerItem.name}}
        </div>
      </div> 
    </div>
    </div>
  </div>
</template>
<script>
import Bscroll from "better-scroll";
import { mapActions,mapState } from "vuex";
export default {
  name: "CityList",
  props: {
    cities: Object,
    hot: Array,
    letter: String
  },
  computed: {
    ...mapState(['city'])
  },
  methods: {
    handleClickCity(city) {
      this.changeCity(city);
      this.$router.push("/");
    },
    ...mapActions(['changeCity'])
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.wrapper);
  },
  watch: {
    letter() {
      if (this.letter) {
        const ele = this.$refs[this.letter][0];
        this.scroll.scrollToElement(ele);
      }
    }
  }
};
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl';

.border-topbottom {
  &:before {
    border-color: #ccc;
  }

  &:after {
    border-color: #ccc;
  }
}

.border-bottom {
  &:before {
    border-color: #ccc;
  }
}

.list {
  position: absolute;
  overflow: hidden;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;

  .title {
    line-height: 0.54rem;
    background-color: #eee;
    padding-left: 0.2rem;
    color: #666;
    font-size: 0.26rem;
  }

  .button-list {
    padding: 0.1rem;
    overflow: hidden;
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;

    .button-wrapper {
      width: 33.33%;
      float: left;

      .button {
        margin: 0.1rem;
        padding: 0.1rem 0;
        text-align: center;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }

  .item-list {
    .item {
      line-height: 0.76rem;
      color: #666666;
      padding-left: 0.2rem;
    }
  }
}
</style>
